Question

A car starting from rest accelerates at a rate of 8.0 m/s/s. What is its final speed at the end of 4.0 seconds?

Answer 1

u = 0m/s (as it starts from rest) a = 8 m/s² (given) t = 4s (given) v = ?  v = u + at v = 0 + 8 (4) v = 0 + 32 v = 32 m/s  Hope this helps ;-)